Add 45/21 and 14/80, Solve 2 3/21 + 14/80 as a fraction

Add 45/21 and 14/80

1^st number: 2 3/21, 2^nd number: 14/80

45/21 + 14/80 is 649/280.

Find the least common denominator or LCM of the two denominators:
LCM of 21 and 80 is 1680

Next, find the equivalent fraction of both fractional numbers with denominator 1680
For the 1st fraction, since 21 × 80 = 1680,
45/21 = 45 × 80/21 × 80 = 3600/1680
Likewise, for the 2nd fraction, since 80 × 21 = 1680,
14/80 = 14 × 21/80 × 21 = 294/1680
Add the two like fractions:
3600/1680 + 294/1680 = 3600 + 294/1680 = 3894/1680
3894/1680 simplified gives 649/280
So, 45/21 + 14/80 = 649/280
In mixed form: 289/280

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